DE1026751B - Process for the preparation of thiopyrimidine compounds - Google Patents

Process for the preparation of thiopyrimidine compounds

Info

Publication number
DE1026751B
DE1026751B DEF18194A DEF0018194A DE1026751B DE 1026751 B DE1026751 B DE 1026751B DE F18194 A DEF18194 A DE F18194A DE F0018194 A DEF0018194 A DE F0018194A DE 1026751 B DE1026751 B DE 1026751B
Authority
DE
Germany
Prior art keywords
compounds
thiopyrimidine
preparation
mercapto
methylpyrimidine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
DEF18194A
Other languages
German (de)
Inventor
Dr Kurt Westphal
Dr Dr H C Gerhard Domagk
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayer AG
Original Assignee
Bayer AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bayer AG filed Critical Bayer AG
Priority to DEF18194A priority Critical patent/DE1026751B/en
Publication of DE1026751B publication Critical patent/DE1026751B/en
Pending legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D487/00Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00
    • C07D487/02Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00 in which the condensed system contains two hetero rings
    • C07D487/04Ortho-condensed systems

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Description

Verfahren zur Herstellung von Thiopyrimidinverbindungen Gegenstand der Patentanmeldung F 17863 IVb/12p ist die Herstellung von Thiopyrimidinverbindungen der allgemeinen Formel worin R, und R2 Alkylgruppen, die auch mit dem Stickstoffatom zum heterocyclischen Ring geschlossen sein können, R3 ein Wasserstoff- oder Halogenatom oder einen Alkylrest, R4 ein Wasserstoffatom oder einen Alkylrest bedeuten. Die Verbindungen werden dargestellt, indem man entweder 2-Halogen-4-aminopyrimidine, in denen die Aminogruppe tertiär ist, mit gegebenenfalls substituierten Aralkylmercaptanen umsetzt oder indem man gegebenenfalls substituierte Isothioharnstoffaralkyläther mit ß-Ketocarbonsäureestern kondensiert, die entstandenen 4-Oxypyrimidine zu Halogenpyrimidinen halogeniert und diese mit sekundären Aminen umsetzt. Die so erhaltenen Verbindungen sind von pharmakologischem Interesse und zeigen insbesondere cytostatische Wirkung.Process for the preparation of thiopyrimidine compounds The subject of patent application F 17863 IVb / 12p is the preparation of thiopyrimidine compounds of the general formula where R 1 and R 2 are alkyl groups which can also be closed with the nitrogen atom to form the heterocyclic ring, R 3 is a hydrogen or halogen atom or an alkyl radical, R 4 is a hydrogen atom or an alkyl radical. The compounds are prepared either by reacting 2-halo-4-aminopyrimidines in which the amino group is tertiary with optionally substituted aralkyl mercaptans or by condensing optionally substituted isothioureaaralkyl ethers with β-ketocarboxylic acid esters, the resulting 4-oxypyrimidines to halopyrimidines and halogenating them with secondary amines. The compounds obtained in this way are of pharmacological interest and in particular show cytostatic activity.

Es wurde nun gefunden, daß man zu den gleichen Verbindungen auch gelangen kann, wenn man 2-Mercapto-4-aminopyrimidine, in denen die Aminogruppe tertiär ist, mit gegebenenfalls substituierten Aralkylverbindungen, die im aliphatischen Teil einen für das Veräthern der 2-Mercaptogruppe geeigneten Substituenten, vorzugsweise ein Halogenatom tragen, umsetzt. In an sich üblicher Weise wird die Thioätherdarstellung in Gegenwart von alkalischen Kondensationsmitteln, z. B. Alkaliäthylat oder -hydroxyd, vorgenommen. Bei einer solchen Verfahrensweise konnte die Bildung von N-Aralkylverbindungen vollkommen unterdrückt werden.It has now been found that the same compounds can also be obtained can, if you have 2-mercapto-4-aminopyrimidines, in which the amino group is tertiary, with optionally substituted aralkyl compounds in the aliphatic part a substituent suitable for etherifying the 2-mercapto group, preferably carry a halogen atom, converts. The thioether presentation is carried out in a manner that is customary per se in the presence of alkaline condensing agents, e.g. B. alkali ethylate or hydroxide, performed. Such a procedure could result in the formation of N-aralkyl compounds be completely suppressed.

Beispiel 16,9 g 2-Mercapto-4-dimethylamino-6-methylpyrimidin (dargestellt durch Kochen von 2-Chlor-4-dimethylamino-6-methylpyrimidin und Natriumsulfhydrat in verdünntem Alkohol, F. 294°C) werden mit einer Lösung von 2,3 g Natrium in 150 ccm absolutem Alkohol gekocht und langsam mit 16,1 g o-Chlorbenzylchlorid versetzt. Nach 7 Stunden wird die Reaktionsmischung vom Alkohol befreit und mit Wasser und Methylenchlorid durchgeschüttelt. Nach Verdampfen des Methylenchlorids aus der wasserfreien Lösung kristallisiert der Rückstand. Er wird in Alkohol gelöst und mit alkoholischer Salzsäure bis zur kongosauren Reaktion versetzt. Es fallen Kristalle aus, die, aus Alkohol umkristallisiert, bei 226°C schmelzen. Man erhält so das 2-o-Chlorbenzylmercapto-4-dimethylamino-6-methylpyrimidin-hydrochlorid mit den in der Patentanmeldung F l7863 IV b 12 p beschriebenen Eigenschaften.Example 16.9 g of 2-mercapto-4-dimethylamino-6-methylpyrimidine (shown by boiling 2-chloro-4-dimethylamino-6-methylpyrimidine and sodium sulfhydrate in dilute alcohol, mp 294 ° C) are mixed with a solution of 2.3 g of sodium in 150 ccm of absolute alcohol and slowly mixed with 16.1 g of o-chlorobenzyl chloride. After 7 hours, the reaction mixture is freed from alcohol and washed with water and Shaken methylene chloride. After evaporation of the methylene chloride from the anhydrous Solution crystallizes the residue. It is dissolved in alcohol and with alcoholic Hydrochloric acid added until the Congo acidic reaction occurs. Crystals fall out Recrystallized alcohol, melt at 226 ° C. The 2-o-chlorobenzylmercapto-4-dimethylamino-6-methylpyrimidine hydrochloride is obtained in this way with the properties described in patent application F 17863 IV b 12 p.

Es ist zwar aus Bulletin de la societe chimique de France, 1948, S. 392 ff. (referiert in Chemical Abstracts, Bd. 42, 1948, Spalte 5916') bekannt, 2-Aralkylthio-4-amino-6-alkylpyrimidinverbindungen durch Kondensation von 2-Mercapto-4-amino-6-alkylpyrimidinabkömmlingen mit Aralkylhalogenderivaten herzustellen. Man erhält dabei jedoch Verbindungen, die keinen merklichen cytostatischen Effekt aufweisen.It is from Bulletin de la societe chimique de France, 1948, p. 392 ff. (Reported in Chemical Abstracts, Vol. 42, 1948, column 5916 ') known 2-aralkylthio-4-amino-6-alkylpyrimidine compounds by condensation of 2-mercapto-4-amino-6-alkylpyrimidine derivatives with aralkyl halogen derivatives to manufacture. However, this gives compounds that are not noticeably cytostatic Have effect.

Der Vorteil der erfindungsgemäß hergestellten Verbindungen liegt demgegenüber darin, daß sie diesen Effekt in hohem Maße besitzen.The advantage of the compounds prepared according to the invention is on the other hand in that they have this effect to a great extent.

Zum Nachweis der größeren cytostatischen Wirksamkeit der Verfahrensprodukte gegenüber bekannten analogen Verbindungen wurde das verfahrensgemäß erhältliche 2-Benzylmercapto -4- dimethylamino-6 -methylpyrimidin (I) mit dem aus >>Bulletin;<, a. a. 0., bekannten 2-Benzy lmercapto-4-amino-6-methylpyrimidin (1I) verglichen.To demonstrate the greater cytostatic effectiveness of the products of the process compared to known analogous compounds, the one obtainable according to the process became 2-Benzylmercapto -4- dimethylamino-6 -methylpyrimidine (I) with the one from >> Bulletin; <, a. a. 0., known 2-Benzyl mercapto-4-amino-6-methylpyrimidine (1I) compared.

Zu diesem Zweck wurden je 16 Mäuse, die mit Ehrlich-Carcinomen behaftet waren, mit 0,1- und 1°/oigen Lösungen von I bzw. II behandelt. Bei den mit I behandelten Tieren waren nach der Behandlung elf Tiere vollkommen frei von Tumoren, bei vier Tieren waren die Tumore noch vorhanden und ein Tier war tot. Bei den mit 1I behandelten Tieren waren nach der Behandlung nur vier tumorfrei. Bei elf Tieren waren die Tumore noch vorhanden und ein Tier war tot.For this purpose, 16 mice each were afflicted with Ehrlich's carcinoma were treated with 0.1 and 1% solutions of I and II, respectively. In those treated with I. Animals were eleven animals completely free of tumors after the treatment, in four Animals the tumors were still present and one animal was dead. In those treated with 1I Only four animals were tumor-free after treatment. With eleven animals the tumors were still present and an animal was dead.

Diese Versuche zeigen, daß die cytostatische Wirkung von I wesentlich größer ist als die von II.These experiments show that the cytostatic effect of I is essential is greater than that of II.

Claims (1)

PATENTANSPRUCH-Verfahren zur Herstellung von Thiopyrimidinverbindungen nach Patentanmeldung F 17 863 IVb/ 12p, dadurch gekennzeichnet, daß man 2-Mercapto-4-aminopyrimidine, in denen die Aminogruppe tertiär ist, mit Aralkylverbindungen umsetzt, die im aliphatischen Rest ein Halogenatom tragen. In Betracht gezogene Druckschriften: Bulletin de Ja societe chimique de France, 1948, S. 392 ff., referiert in Chemical Abstracts, Bd.42 [1948], Spalte 5916i.PATENT CLAIM process for the production of thiopyrimidine compounds according to patent application F 17 863 IVb / 12p, characterized in that 2-mercapto-4-aminopyrimidines, in which the amino group is tertiary, reacts with aralkyl compounds which are aliphatic The remainder carry a halogen atom. Publications considered: Bulletin de Ja societe chimique de France, 1948, p. 392 ff., reported in Chemical Abstracts, Vol. 42 [1948], column 5916i.
DEF18194A 1955-08-13 1955-08-13 Process for the preparation of thiopyrimidine compounds Pending DE1026751B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEF18194A DE1026751B (en) 1955-08-13 1955-08-13 Process for the preparation of thiopyrimidine compounds

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF18194A DE1026751B (en) 1955-08-13 1955-08-13 Process for the preparation of thiopyrimidine compounds

Publications (1)

Publication Number Publication Date
DE1026751B true DE1026751B (en) 1958-03-27

Family

ID=7088853

Family Applications (1)

Application Number Title Priority Date Filing Date
DEF18194A Pending DE1026751B (en) 1955-08-13 1955-08-13 Process for the preparation of thiopyrimidine compounds

Country Status (1)

Country Link
DE (1) DE1026751B (en)

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
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